Engine air cooling apparatus



S. MUNSON. ENGINE AIR COOLING APPARATUS.

APPLICATION FILED MAY 20,1920.

Patented Nov. 23, 1920.

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UNITED STATES SWENEY MUNSON, OF FOWLER, COLORADO.

ENGINE AIR COOLING APPARATUS.

Specification of Letters Patent. Patented N 23 1920 Application flled May 20, 1920. Serial No. 382,893.

7 '0 all whom it may concern Be it known that I, SWENEY MUNsoN, a citizen of the United States, residing at Fowler, in the county of ()tero and State of Colorado, have invented a certain new and useful IIIIPIOXQIDOIH? in Engine Air Cooling Apparatus, of which the following is a specification.

My invention relates to improvements in engine air cooling apparatus.

The object of my invention is to provide an air cooling apparatus for explosive engines, which is simple, cheap to make and effective. It is particularly adapted for use on engines having a plurality of cylinders,

and is provided with novel means for effectively cooling all of the cylinders.

It is adapted for application to machines already in use.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawings which illustrate the preferred embodiment of my invention,

Figure 1 is a vertical sectional view of my improved apparatus.

Fig. 2 is a view partly in plan and partly in horizontal section of the same, the upper section of the casing being removed.

Fig. 3 is a view partly in front elevation and partly in vertical section.

Fig. 4 is a view partly in rear elevation and partly in cross section.

Fig. 5 is a cross section on the line 55 of Fig. 1.

Fig. 6 is a front elevation of the hood.

Similar reference characters designate similar parts in the different views.

1 designates a plurality of upright engine cylinders, 2 the crank case, 3 the crank shaft, and 4: a hinged hood of the engine. The hood at the front end is provided with air inlets 5. 6 designates the exhaust pipes and 7 the intake pipes of the engines.

In the hood 4 is a casing preferably comprising a lower section 8 and an upper section 9, the latter being carried by the hood 4 so as to be swung therewith. The lower edge of the upper section, fits against the upper edge of the lower section 8. The two sections 8 and 9 of the casing form a mam channel 10 in which the lower portions of the cylinders 1 are disposed, said channel 10 having a lower inlet branch 11, Flg. 1, adapted to receive air from a force fan 12 cool the exhaust pipes.

rotatably mounted on a stud 13 secured to the engine body. The fan 12 has secured to it a sprocket Wheel 14 which is connected by a chain belt 15 with a sprocket wheel 16 secured to the front end of the crank shaft 3. The rear end of the channel 10 is adjacent to suction means comprising, preferably a fan 17, secured tothe rear end of the crank shaft 2.

In the upper section of the casing are mounted partitions 18, 19, and 20 which form with the upper section of the casing branches 21, 22, 23 and 24 respectively of the air channel. These channels lead respectively to the tops of the cylinders l and to points respectively between the exhaust and inlet pipes 6 and 7.

Each of the cylinders 1 is provided with peripheral radiating projections consisting preferably of horizontal annular flanges 25 having vertical perforations 26, Fig. 2, through which the cooling air passes.

The exhaust pipes 6 are preferably provided with annular peripheral flanges 27, Fig. 1, between which the air is adapted to pass.

In the operation of my'invention, when the crank shaft 3 is rotated, the fan 12 will be revolved in a direction such that air will be drawn through the openings 5 and discharged into the branches 11, 21, 22, 23 and 24:. The air passing through the branches 21, 22, 23 and 24, will pass against the tops of the cylinders 1 and thence downwardly around said cylinders and against the flanges 25 and through the openings 26 into the inain channel 10, thereby cooling the upper portions of the cylinders. The air passing through the lower branch 11 will unite with the downcoming currents from the upper branches and will cool the lower portions of the cylinders, 1. The air passing between the flanges 27 and against the pipes 6 will The air will pass rearwardly through the channel 10, its velocity and volume being increased by means of the suction effected with the fan 17.

When the hood 4 is swung in the usual manner to the open position, the upper section 9 of the casing will be lifted therewith, thereby giving free access to the engine cylinders and parts which are normally covered by the upper section 9 of the casing.

' With the use of my invention, the cylindiers are all .thoroughly cooled with the elimination of water jackets and with the utilization of a simple and cheaply constructed apparatus.

I do not limit my invention to the structure shown and described, as many modifications, within the scope of the appended claims, may be made without departing from the spirit of my invention. 7

What I claim is:

1. In an engine cooling apparatus, an engine cylinder, a movable hood in which the cylinder is located, a casing comprising upper and lower sections, the upper section being carried by the hood, the casing having a channel 1n which the cylinder is located, means for forcing air into the channel at one end of the casing, and suction means at the other end of the channel, substantially as set forth.

2. In an engine cooling apparatus, a plurality of engine cylinders, a movable hood in which the cylinders are located, a casing comprising upper and lower sections, the upper section being carried by the hood, the casing having a main air channel in which the cylinders are located, the channel having branches arranged to respectively conduct air against said cylinders, and means for forcing air into the main channel through said branches, substantially as set forth.

3. In an engine cooling apparatus, a plurality of cylinders, a movable hood in which the cylinders are located, a casing comprising upper and lower sections, the upper section being carried by the hood, the casing having a main channel in which the cylinders are located, the channel having branches arranged to conduct air against said cylinders respectively, means for forcing air through said branches into the main channel, and suction means at the discharge end of said main channel, substantially as set forth.

In testimony whereof I have signed my name to this specification.

SWENEY MUN SON. 

